they done?" wailed the hired girl. "I just went into the pantry and opened the closet door and out jumped about a thousand mice at me!"

"Yes! and they are running all over the house!" broke in the cook savagely. "One of 'em ran right over my foot and tried to bite me! I'm going to pack my trunk and leave! I won't stay here another minute!"

CHAPTER II

SOMETHING OF THE PAST

At the announcement of the hired girl that their sons had let loose in the farmhouse a thousand mice—more or less—the three Rover brothers looked at each other enquiringly.

"Another joke—and so soon!" gasped Sam Rover.

"That certainly is the limit!" broke out Dick Rover, as he started for the house.

"If I find Andy and Randy have been up to another trick right on top of this water-hose nonsense, I'll give them a tanning they won't forget in a hurry," added Tom Rover; and then he and Sam followed Dick up the back porch and into the kitchen.

To the readers of the former volumes in these two "Rover Boys Series," Dick, Tom and Sam Rover will need no special introduction. For the benefit of others, however, let me state that the sober-minded and determined Dick was the oldest of the three, with the fun-loving Tom coming next and sturdy Sam being the youngest. They were the sons of one Anderson Rover, who, when not traveling, made his home at Valley Brook Farm, in New York State, living there with his brother Randolph Rover and wife Martha.

While Dick, Tom, and Sam were quite young, and while their father was off exploring in the interior of Africa, the three Rovers had been sent to Putnam Hall Military Academy, where they had made a few enemies and likewise a host of friends, including a manly and straight-forward cadet named Lawrence Colby. After many adventures both at school and in various portions of the globe, they had graduated from Putnam Hall with honor and then entered Brill College.

At that time, Mr. Anderson Rover, who had long since returned from Africa, was not in the best of health. He had numerous business interests both in Wall Street, New York City, and in the West to take care of, and presently it was found necessary that Dick leave college and take charge of business matters for his parent. In this task Dick was soon aided by Tom, leaving Sam the only member of the family to graduate from Brill.

While at Putnam Hall the three Rovers had become acquainted with three charming girls, Dora Stanhope and her cousins, Nellie and Grace Laning. This acquaintance had ripened into loving intimacy; and when Dick went into business he took Dora Stanhope for his life-long partner. A little later Tom was married to Nellie Laning, and, after he had left Brill and joined his brothers in conducting their father's various business enterprises, Sam married Grace Laning.

With the aid of Mr. Anderson Rover and some others, The Rover Company was organized with offices on Wall Street, New York City. The company dealt in stocks, bonds, real estate, and other investments; and Dick was now president, with Tom secretary and Sam treasurer. The company had been prosperous from the start, although on several occasions enemies had done their best to give the concern a black eye.

When they were first married, Dick and his beautiful wife Dora had begun housekeeping in a cosy apartment in the metropolis, and they had presently been followed by Tom and Sam. But two years later the three brothers had a chance to buy a beautiful plot of ground on Riverside Drive facing the noble Hudson River, and on this they built three fine houses adjoining each other, Dick living in the middle house with Tom on one side and Sam on the other.

Before the happy young folks moved into the new homes, Dick and Dora were blessed with a little son, who later on was named John, after Mr. John Laning. Later still, this couple had a daughter, whom they named Martha, after Aunt Martha of Valley Brook Farm. Little Jack, as he was called in those days, was a wonderfully bright and clever lad with many of the clear-minded qualities which had made his father so successful in life.

About the time young Jack was presented with a baby sister, Tom and Nellie Rover came forward with twin boys, one of whom was named Anderson, after his grandfather, and the other Randolph, after his uncle. Andy and Randy, as they were always called for short, were exceedingly bright, each taking after his father, Andy always saying things that were more or less funny and Randy playing tricks whenever he got the chance. They were truly chips off the old block, and Tom knew it, although outwardly he professed to be ignorant of the fact.

"Those twins will be some boys when they grow up," was old Anderson Rover's comment, when the lads were less than five years old. "They're just as full of fun now as Tom ever dared to be."

"So they are," answered his brother Randolph. "My! my! what will they ever do with them when they get a little older?"

"I sha'n't mind," said Aunt Martha, her eyes beaming brightly. "That is, if they are really and truly as good-hearted as Tom has always been. He certainly was the worst of the lot when it came to playing jokes, but no lad ever had a better heart than Tom—not one!"

About the time that Tom began to boast about his twins, Sam and Grace came along with a beautiful little girl, whom they named Mary, after Mrs. Laning. About a year later the girl was followed by a boy, and this sturdy little chap was named Fred, after Sam's old school chum, Fred Garrison.

Living so close together, the four boys and the two girls were brought up almost like one big family. The girls were all but inseparable, and the boys could generally be found together, either studying, playing, or having a good time.

When the time came to set the children to studying, Martha and Mary were placed in a private school for girls located but a short distance from their homes. It was thought best, however, at the start to send the boys to a public school, and this was done. For three years matters went along very well, and during that time The Rover Company prospered far beyond the expectations of those in charge. But then Andy and Randy, becoming a little older, began to exhibit their talent for playing tricks, and usually they were seconded in these efforts by Jack and Fred. Once or twice all of the boys were reported by the school principal for this, and each time the lads were remonstrated with by their fathers in such a manner that, as young Andy expressed it, "it was far more comfortable to sit down standing up than it was any other way."

"I think I'll have to do something with those twins," said Tom Rover to his wife, after the boys had been reported for more tricks. "The school they go to doesn't seem to be strict enough." And thereupon he had sent the boys to a private establishment further uptown.

Jack and Fred had begged their parents that they might be allowed to do likewise; and at this private school the four cousins had been kept until the close of the Spring term the preceding June. To the credit of this school it must be said that the boys advanced rapidly in their studies. Their deportment, however, was apparently no better than it had been before, and as a consequence Tom Rover was more worried than ever, while Dick and Sam began to wonder secretly whether it would not be advisable to separate their sons from the mischievous twins.

One day Dick broached this subject to his offspring. At once young Jack set up a wild remonstrance.

"Oh, Dad! don't take me away from Andy and Randy and Fred!" he pleaded. "Why, we are just like brothers! I wouldn't know how to get along without 'em."

"But I'm afraid Andy and Randy are leading you into bad habits," returned Dick Rover.

"I don't think so, Dad. Anyway, I've heard folks say that Andy and Randy are no worse than their father used to be—and you never wanted to be separated from Uncle Tom, did you?"

At this question Dick Rover's face took on a